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Warning
Application error

21263: Invalid Answering Machine Detection Parameters

Twilio Voice DocumentationVoice

Description

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Invalid Answering Machine Detection Parameters

Possible causes

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AsyncAmd, AsyncAmdStatusCallback, and/or AsyncAmdStatusCallbackMethod parameters from POST to /Calls API have been passed in a POST to /Participants API, or added to <Dial><Number> or <Dial><Sip> TwiML.

Possible solutions

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Do not include AsyncAmd, AsyncAmdStatusCallback, or AsyncAmdStatusCallbackMethod parameters in POST requests made to /Participants API and in TwiML responses that include <Dial><Number> or <Dial><Sip> with Answering Machine Detection enabled.